> ## Documentation Index
> Fetch the complete documentation index at: https://docs.upstackdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Purchases: Track Completed Shopify Orders

> Track total purchase events on your Shopify store. Count completed orders captured by the Upstack Pixel to measure conversion volume and marketing effectiveness.

<Tip>
  Purchases counts the total number of completed orders tracked by the Upstack Pixel on your Shopify store.
</Tip>

## Formula

<Info>
  **Purchases** = **COUNT** ( Purchase Events )
</Info>

### Formula Components

| Metric              | Definition                                                                         |
| ------------------- | ---------------------------------------------------------------------------------- |
| **Purchase Events** | Each completed Shopify order that fires a purchase event through the Upstack Pixel |

| Metadata        |                                                      |
| --------------- | ---------------------------------------------------- |
| **Type**        | Number                                               |
| **Data Source** | [Upstack Pixel](/pixel), [Shopify](/sources/shopify) |
| **Aggregation** | Count                                                |

***

## Example

Your Shopify store tracked **1,847 purchases** across attribution channels in January.

| Channel    | Purchases | % of Total |
| ---------- | --------- | ---------- |
| Meta Ads   | 892       | 48.3%      |
| Google Ads | 512       | 27.7%      |
| Organic    | 298       | 16.1%      |
| Direct     | 145       | 7.9%       |
| **Total**  | **1,847** | **100%**   |

***

## How It Works

Purchases counts every purchase event tracked by the Upstack Pixel. When a customer completes checkout on your Shopify store, the pixel fires a purchase event. This metric represents your actual Shopify order count as seen by the tracking pixel, giving you accurate conversion volume for attribution analysis.

***

## When to Use

| Scenario                        | Action                                            |
| ------------------------------- | ------------------------------------------------- |
| Measuring conversion volume     | Track total purchases across channels             |
| Evaluating campaign performance | Compare purchase counts by attribution source     |
| Calculating conversion rates    | Use as numerator for Session Conversion Rate      |
| Monitoring sales trends         | Track daily, weekly, or monthly purchase patterns |

***

## Related Metrics

| Metric                                                                                   | Relationship                                    |
| ---------------------------------------------------------------------------------------- | ----------------------------------------------- |
| [Revenue](/reference/metrics/funnel/conversions/revenue)                                 | The monetary value generated by these purchases |
| [Initiate Checkouts](/reference/metrics/funnel/engagement/initiate-checkouts)            | Prior funnel step before purchase               |
| [Session Conversion Rate](/reference/metrics/funnel/conversions/session-conversion-rate) | Purchases ÷ Sessions × 100                      |

[See all Attributed Conversions metrics →](/reference/metrics/funnel/conversions)